Saab Gripen : News And Discussions

What big load? It's MTOW is 16,500kg, it weighs 8,000kg empty* and the next 3,400kg is fuel. So that leaves 5,100kg of external load but since it has a fuel fraction less than 30%, half of that will be fuel, leaving room for ~2,500kg of weapons, minus 200kg for a targeting pod. Overall leaving it no better than an F-16 as regards load bearing.

*Page 4 -http://www.saabgroup.com/Global/Documents and Images/Air/Gripen/Technical brochure, Gripen NG, English.pdf

Typhoon carries 7,500kg externally* and has a much bigger internal fuel fraction and lower SFC and is less affected by external load because it's a bigger aircraft with more powerful engines.

*Eurofighter Typhoon - Wikipedia, the free encyclopedia
Eurofighter Typhoon – Wikipedia

Typhoon / Gripen NG
Empty Weight - 10,500kg / 8,000kg (Typhoon is 31.25% heavier)
Loaded Weight - 15,500kg / 11,400kg (Typhoon 36% heavier)
Fuel Fraction - 32.25% / 29.8% (Typhoon 10% better)
SFC - 0.74lb/lbf.hr / 0.78lb/lbf.hr (F414 has 3-4% improvement over F404)
TWR - 1.2 / 0.88 (Typhoon 36% higher)
Wing loading - 61.9lb/ft^2 / 77.7lb/ft^2

Gripen NG is a terrible, terrible aircraft. Worse than the JAS-39C variant kinematically. When it claims supercruise, I can't see it supercruising whilst carrying anything with that TWR.

Typhoon / F-16C / Gripen NG
Dry Thrust - 27,000lbf / 17,155lbf / 13,000lbf (out next decade, 6th gen)

 

can ya give details on :

rafale ( the variant IAF is going to have) has max life limited to.........
F16 has max life limited to.........
f18 has max life limited to.........
f22 has max life limited to.........
f35 has max life limited to.........
mig 35 has max life limited to.........
su 35 has max life limited to.........
mig 29 has max life limited to.............
mirage 2000 has max life limited to.........
su 30 has max life limited to.........
jags has max life limited to.........
tejas has max life limited to.........

 

Empty weight is not 8000Kg.
Jas 39 Gripen NG

 

Dude, it's 8,000kg. This is direct from Saab themselves. See black box on page 3.

http://www.saabgroup.com/Global/Documents and Images/Air/Gripen/Technical brochure, Gripen NG, English.pdf

LENGTH 15.2 m
WIDTH 8.6 m
MASS WHEN EMPTY 8,000 kg
INTERNAL FUEL CAPACITY 3,400 kg
MAX. TAKE-OFF WEIGHT 16,500 kg
MAX. THRUST 98 kN
MIN. TAKE-OFF DISTANCE 500 m
LANDING DISTANCE 600 m

MAX. SPEED AT SEA LEVEL > 1,400 km/h
MAX. SPEED AT HIGH ALTITUDE Mach 2
SUPERCRUISE CAPABILITY Yes
MAX. SERVICE ALTITUDE > 16,000 m
FERRY RANGE 4,000 km
G-LIMITS +9G/-3G
HARDPOINTS 10
COMBAT TURNAROUND AIR-TO-AIR 10 min
FULL ENGINE REPLACEMENT <1 hour

Wrong, it's 5,000kg internal fuel, which is 6,215L.

Eurofighter Typhoon – Wikipedia

Gripen NG has just 3,400kg of internal fuel

Should be:

Specifications and performance data - Dassault Aviation

Fuel Fraction
Typhoon (5000/ (10500 +5000)): 0.323
Rafale (4700/ (10000 +4700)): 0.320 (using 10t from Dassault link or 0.331 using 9,500kg)
F-22 (18,000/61,340): 0.293
Gripen NG(3400/ (8000 +3400)): 0.298

With 6 Meteor and 2 SRAAMs each

MICA - 112kg
ASRAAM - 88kg
IRIS-T - 88kg
Meteor - 188kg
AMRAAM - 356lbs
AIM-9 - 200lb
Cannon ammo for F-22 = 584lb on basic empty weight, already included in empty weight on other fighters.

Fuel Fraction+AAMs
Typhoon (5000/ (10500 +5000+ 176 + 1128 )): 0.30
Rafale (4700/ (10000 +4700+ 224 + 1128)): 0.29 (using 10t from Dassault link or 0.30 using 9,500kg)
F-22 (18,000/64,460): 0.28
Gripen NG(3400/ (8000 +3400+ 176 + 1128)): 0.27

TWR+AAMs
Typhoon (40500/2.2)/(10500 + 176 + 1128 + 5000): 1.10
F-22 70,000/(61340 + 400 + 2136 + 576): 1.09
Rafale (34000/2.2)/(10000 + 224 + 1128 + 4700): 0.96 (0.99 using 9500kg)
Gripen NG (22000/2.2)/(8000 + 176 + 1128 + 3400): 0.79 6th gen Saab

Clearly only two platforms make and exceed TWR parity with a full AAM loadout.

Wing Loading+AAMs
Typhoon (10500 + 176 + 1128 + 5000)*2.2/551: 67.1lb/ft^2
Rafale (10000 + 224 + 1128 + 4700)*2.2/: 71.8lb/ft^2 (69.5lb/ft^2 using 9500kg)
F-22 (61340 + 400 + 2136 + 576)/: 76.7lb/ft^2
Gripen NG (8000 + 176 + 1128 + 3400)*2.2/: 86.5lb/ft^2 6th gen Saab

Radar
F-22: 1,956 T/R Modules
Typhoon: 1,500 T/R Modues***
Rafale: 1,000 T/R Modules
Gripen NG: 1,000? T/R Modules***

***Swashplate mounted.

Avionics (HMD/IRST/RF attack/360deg LOAL)
F-22: NO/NO/YES/NO/YES
Typhoon: YES/YES/YES/YES
Rafale: NO/YES/YES/YES
Gripen: YES/YES/YES/YES

Top Speed/Supercruise/6+g turn at Mach 1.6 and 36,000ft
F-22: Mach 2+/Mach 1.6+/YES
Typhoon: Mach 2.35/Mach1.5/YES
Rafale: Mach 1.8/Mach 1.3/NO
Gripen: Mach 2.0/Not Really/HELL NO!

 

Here's the British owned Gripen based in UK.



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In the official technical guide of eurofighter Typhoon the Empty mass is 11,000 kg and not 10500
http://www.google.fr/url?sa=t&rct=j...sybfXl9bepurkm9Ww&sig2=2Y_NS9OsrQ3-joQbRHnMQw
DIMENSIONS / MASS
Wingspan 10.95 m (35 ft 11 in)
Length overall 15.96 m (52 ft 4 in)
Height 5.28 m (17 ft 4 in)
Wing Area 51.2 m2(551.1 ft2)
Basic Mass Empty 11,000 kg (24,250 lb)
Maximum Take-off > 23,500 kg (51,809 lb)
Maximum external load > 7,500 kg (16,535 lb)

 

And it's the basic weight, so it can't go below that unless the cockpit and the pilot are thrown out. Actual empty weight today should be much higher considering all the upgrades happening.

 

Which countries invent, design and make Gripen?

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That's because it's averaged for the single-seater (10,500kg) and two-seater (11,700kg).

Eurofighter Typhoon – Wikipedia

Just as the Dassault page's 10,000kg may be an average for different Rafale variants, hence why I did a calculation for 9,500kg in brackets too.

 

Is that for the C variant because I understood Selex UK do the Raven ES-05.

Raven ES-05
Data Sheet

 

UK Selex is also delivering the Skyward-G infrared search & track (IRST) passive sensor and identification friend-or-foe (IFF) system for use on the swing-role aircraft. Saab has recently selected Selex's new BriteCloud expendable active decoy (EAD) as an electronic warfare option for the Gripen NG and all other versions of the aircraft.

 

don't you think that 8000 kg for Gripen is also averaged?

 

Averaged against what, a lorry? The figures are piss-poor even if you take 500kg off that weight and get worse quickly as soon as you add a war load of any kind whatsoever.

It's only really suitable as a trainer jet, which is what we use them for (ETPS).

Saab JAS 39 Gripen - Wikipedia, the free encyclopedia

 

The avionics are pretty decent, it's just a shame about the weight and thrust.

 

ETPS is really suitable for trainer jet.